Neymar scores twice in each half
Cardiff flop Javi Guerra converts Bebe cross
Barca without injured Messi & Iniesta
Earlier, Ronaldo broke Real scoring record
We asked on our BBC Match of the Day Facebook page, external if Bebe would be Barcelona's undoing today.
Alex Kirk: Bebe is better than Messi
Aron Bagnall: Bebe what a player mate
Lee Linnell: He actually played well for United whenever he got the chance. His goal against Wolves was quality!
Andy Price: Bebe can't undo his shoe laces
Conor Byrne: Is this some sort of sick joke
Image source, Getty ImagesTono pulls off a great save to keep Luis Suarez out, although it would have been the keeper's fault if it had been a goal.
His kick goes straight to Sergio Busquets, who plays a first-time ball to an unmarked Suarez 10 yards out - but Tono denies him brilliantly with his foot.
The corner comes to nothing. And a minute later Barcelona should be ahead.
Ivan Rakitic is found in acres of space by a brilliant Sergi Roberto pass - he's got all the room in the world - but keeper Tono stands tall and keeps out his effort from just inside the box.
Had that fallen to a striker, that's 1-0.
Corner to Rayo Vallecano as Lass Bangoura runs at Barcelona's defence and Jeremy Mathieu gets it out.
Neymar does take the free-kick but it's deflected high and keeper Tono deals with it.
Barcelona break at pace and Neymar wins a free-kick just outside the box after a double-footed tackle by Razvan Rat.
The Brazilian looks like he's going to take it.
Image source, ReutersRayo get us under way at the Nou Camp.
Do you reckon there's a single Rayo Vallecano fan out there with Bebe on the back of his jersey?
Or a Manchester United one for that.
Image source, EPADoes any football shirt look less like one than Sevilla's?
Eibar and Sevilla drew 1-1 earlier, Kevin Gameiro levelling for the visitors.
Two more La Liga matches later tonight - Valencia host Malaga at 21:00 BST and five minutes later Real Betis are at home to Espanyol.
Anyone know what's going on there?
Quote MessagePerhaps it is a good time to be going to Camp Nou. These international breaks, we don’t know just how much they affect a team like Barca, but it is true that we don’t have so many international players and we have had a more settled build up to the game.
Rayo Vallecano striker Javi Guerra
Image source, Getty Images
Image source, EPAQuote MessageRayo Vallecano don't let you have the ball easily and they make you very uncomfortable. If we aren’t sharp, they can take possession and control the ball. The key is to not lose the ball and to be good defensively. We will have to force them into making mistakes.
Barcelona boss Luis Enrique
Image source, .Cristiano Ronaldo officially became Real Madrid's all-time top scorer today with a goal as they beat Levante 3-0 in La Liga.
The 30-year-old Portugal forward scored his 324th Real goal in 310 games to overtake Raul's record.
The club had already considered Ronaldo the record holder as they credit him with a goal deflected off Pepe in 2010.
Ronaldo's official record-breaking strike came after an hour from just outside the box - either side of goals from Marcelo and Jese.
After scoring twice in a 2-0 win over Malmo last month, Real held a presentation to give Ronaldo a trophy for breaking the record.
#bbceurofooty
Barcelona haven't looked too hot this season even before the injury of Lionel Messi.
How will they cope without their talisman for two months?
Let us know your thoughts on that - or anything else - using #bbceurofooty on Twitter.
Image source, Getty ImagesBarcelona - without Lionel Messi - start with Sandro up front next to Neymar and Luis Suarez. He gets the nod over fellow 20-year-old Munir El Haddadi, who is on the bench.
Rayo Vallecano, who are 15th, start with a strike-force of Manchester United legend Bebe (seven games with united, two goals) and Cardiff demigod Javi Guerra (five Bluebirds games, no goals).
Barcelona: Bravo, Alves, Alba, Mathieu, Pique, Sergi Roberto, Rakitic, Busquets, Suarez, Neymar, Sandro. Subs: Ter Stegen, Douglas, Mascherano, Bartra, Adriano, Gumbau, Munir.
Rayo Vallecano: Tono, Nacho, Llorente, Ze, Rat, Jozabed, Trashorras, Bangoura, Bebe, Ebert, Guerra. Subs: Chechu Dorado, Miku, Raul Baena, Manucho, Adri Embarba, Juan Carlos, Alex Campos.
Image source, EPAIn fact Barca are so short of players, they are considering going to the Court of Arbitration for Sport in their bid to register another.
With Rafinha out for six months, the Spanish and European champions want to register fellow midfielder Arda Turan.
The Turkey international cost them £24m in the summer from Atletico Madrid, but they are not allowed to register him until January because of a transfer ban.
Image source, Getty ImagesNo Lionel Messi.
No Andres Iniesta.
No Thomas Vermaelen or Rafinha.
A defeat in their last game at Sevilla.
How will Barcelona cope without their injured quartet today?